The Time Machine

After his fiance is murdered a young physics professor decides to build a time machine in order to change the past. After traveling back and finding his attempt to save her life thwarted, the professor then decides to travel into the future to find answers. Finding himself in 2037, he is dazzled by technology but narrowly escapes as the moon is destroyed due to futuristic colonization. Falling into his time machine he accidentally goes 800,000 years into the future. He finds the world is broken into castes and uses his machine and humanity to reset the world order.